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No. 259,305. Patented June 13, 1882.'

(No Mdel.) 2 Sheets-Sheet 1.V

C. A. GREENYLEAF.

TURN TABLE.

Inv anim".

if e si., v F Z' (No Model.) 2 Sheets-Sheet 2.

G. A. GRBBNLBAF.

TURN TABLE.

No. 259,305. Patented June 13, 1882.

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OLEMENTS A. GREENLEAF, OF INDIANAPOLIS, INDIANA.

TURNTABLE.

SPECIFICATION forming part of Letters Patent No. 259,305, dated J' une13, 1882,

Application tiled January 17, 1881.

To all Whom it may concern:

Be it known that I, OLEMENTS A. GREEN- LEAF, of the city ofIndianapolis, in the county ot' Marion and State of Indiana, haveinvented certain new and useful Improvements in Turn- Tables, of whichthe following is a specification.

My invention,in general, consists of a turntable which, while beingoperated as such, is entirely supported upon a central pedestal, ashereinafter set forth. v

Various forms of mechanisms may be supplied to carry into effect myinvention.

A prominent feature of my invention consists in the particular mechanismI have originated for keeping the track ot' said turn-table in ahorizontal plane while said turn-table is beiu g turned around.

Certain subordinate features of my invention consist of those portionsof this mechanism which I have invented, and which serve to assist inkeeping the top of the turn-table in a horizontal plane.

Various devices may be supplied to support the ends of the turn-tableand to prevent the rotation of the latter while theload is passing ofi'or on. One description of said end-supporting device and one descriptionof locking device, both invented by me, constitute subordinate featuresof my invention. Other subordinate features of my invention will benoticed hereinafter.

Ihe objects and advantages of my invention will be fully apparent fromthe following description.

In' the accompanying drawings, making a part of thisspecitication,Figure lis a side elevation of a turn-table embodyingmyinvention,

the sides and bottom of the pit within whichthe turn-table revolvesbeing shownin section. Fig. 2 is a top view of the central box and onehalf of the turn-table and the edge of the pit adjacent thereto, theother half of the-turn-table being broken away. Fig. 3 shows a centralvertical transverse section of the turn-table and itssupporting-pedestal. Fig. 4 shows a central vertical longitudinalsection of one half of the box and the said pedestal. Fig. 5 is a sideelevation of the end ofthe turntable and that portion of the pitadjacent thereto, and showing that description of device which I have inthe present instance adopted to sup- (No model.)

port and lock the ends of the table while the load is passing on or offthelatter. Fig. 6 is a top view ofthe devices shown in Fig. 5. Fig. 7 isan elevation of the end of the turn-table .and of the locking andsupporting devices alluded to in the description of Fig. 5; and Fig. Sshows an outside elevation of the countersunk washer and bolt, andbelowthis elevation shows a vertical central section of same.

A indicates the turn-table, which is to be so constructed as to beconsidered and to act as one beam-in other words, be so constructed asto resist diagonal deiiection of the structure. A desirable mode is toconstruct two truss-beams, B B, provided with and stiffened by a centralbox stiff enough to securely support the weight of the turn-table andits load. In the present instance the two truss-beams B B are eachcomposed of the vertical plates a, of wrought-iron, united together byangle-irons bolted to the vertical edges of adjacent plates.

`Angle-irons are bolted to these plates at the top and bottom, and tothese angle-irons are bolted the horizontal plates C, upon the upper setof which rest the cross-ties D, which in turn carry the track E.Vertical plates located between the trusses and transversely to thelatter are bolted to an gle-irons, which in turn are bolted to theplates a. Angle-irons are secured by bolts to the vertical transverseplates at the top and bottom of the latter, and to the top and bottomedges of the said plates are secured the horizontal plates c3 by beingbolted to thelast-mentioned angle-irons. Cross-stays d connect thosecorners ofthe rectangular box formed between the plates a and adjacenttransverse plates, and which are diagonally opposite, said cross-staysbeing bolted at their ends to the truss-beams B, and thus furtherstrengthen the combined trusses.

At the center of the turn-table the usual cross-partition connecting thetruss-beams is omitted, and the box His employed to connect the twotruss-beams. There are various modes in which this box can be properlyeonstructed. A very useful one is the following: A top plate, e, bottomplate, c', end plates, f, and side plates, g g', are secured together bymeans of appropriate angle irons. Within the shell I, thus formed,vertical cross-plates K, whose top edges lie directly beneath andadjacent to the top plate, e, are attached by' IOC angle-irons and boltsto the sides and to the I-bcams m, having their webs vertical. Thesebeams m are attached together by suitable angle-irons, and form arectangular shell within the outer shell, already described. Within thisinner shell is an annular vertical brace, n, whose upper edge liesunderneath and against the top plate, e. Placed underneath and lyingagainst the bottom edges of this shell and of annular bracenis thehorizontal plate p. The top plate, e, and bottom plate, c', of the shellI are centrally cut away, as shown, to admit of the introduction thereinof the pedestal J and its necessary accompanying devices. Upon the topof the pedestal lies aring, S, provided in its upper side with acircular runaway, W, the bottom of which latter is beveled down fromwithin outward for receiving the conicalv rollers t, which roll therein.A vertical central projection, V, of the pedestal, closely fitting thecentral opening of the ring, serves to prevent any lateral movement ofsaid ring. A similar ring, t', is provided at its lower side with agroove or runaway, 1V', the back or bottom of which latter is deepenedfrom within outward. This runaway W receives the conical rollers, asshown. Upon the top of this ring rests an annular plate, M, providedwith a vertical projection, o', which closely tits the annular openingin ring t and prevents the plate M from moving laterally. Vertical boltspassed at intervals through the plate 19 and top plate, e, and plate M,are secured in position by nuts It will be observed that these boltssupport the weight of the entire turn-table, inasmuch as the box H restsupon them and they rest upon the plate M. The space between this plate Mand the top plate, e, is usually occupied by a wooden filling, y,surrounded and capped by the metallic rim y. Y

To prevent the box H being strained laterally and the trusses fromdiagonal deflection, the diagonal brace-plates z are introduced andsecured. as shown. The box H is firmly bolted to the beams B by thestay-bolts 12, which pass through the entire box and the beams, and aresecured in position by nuts. To prevent the end of the stay-bolts beingcut off by the shearing action of the beams B whena load strikes the endof the turntable, I interpose a countersunk washer, 13, of a novelconstruction,l and a socket, 14, which secures said washer between thestay-bolt and the adjacent edge of the bolt-hole through the beam. Theinner end of the socket 14, in which the countersunk washer is received,is secured onto a pipe, 15, which surrounds the stay-bolt for the wholeof the distance through the box. The pedestal rests upon and is firmlysecured to a suitable solid foundation, as N, in the usual manner. Atthe edge of the central orice in the bottom plate, c', and secured tothe latter,-

is an annular roller-carrier, P, provided with horizontal flange u,bolted to the under side of said plate, and vertical ange u', bolted toan angle-iron, u2, which latter is in turn bolted to the top of saidplate. 1

The connections between the wrought-iron plates and the an gle-ironsaforementioned can be and often are preferably made by means of rivetsinstead of by bolts and nuts; but this remark does not apply to thebolts x nor the bolts 12. AV groove, P, in the carrier P contains andsupports the rollers R. These rollers are in the present instancespherical and roll against and between the surface of the groove P andthe lower face, j, of the pedestal J. The sides of the box H and theplate e operate as a brace, which rests against the side ot' thepedestal, and which, for the purposes of illustration, will bedesignated by the numeral 20. These rollers are in the presentinstancespherical, but may be conical or cylindrical, ctc., as desired, carebeing taken that they are so arranged and fitted to a proper groove incarrier P that they shall roll easily and without friction upon the faceof the pedestal.

A turn-table thus constructed is supported by and free to turn upon thecentral pedestal, J, is sufficiently stift' to resist deflection whilebearing and turning with the load, and is prevented from tipping in anydirection byv resting against the lower portion of the pedestal andemploying the latter as a brace and support against the tendency of sucha table to tip. The presence of the rollers R makes the use of the lowerpart of the pedestal as a brace, as aforementioned, practical, for thereason that they obviate such friction at the point where the turn-tablewould impinge against the lower portion of said pedestal as would tendto interfere with the easy operation of the table.

rlhe feature ot' my invention above described enables me to dispensewith any end support for turn-tables-such as wheels and an annular trackin the pit, as used in a majority of turntables now in use-and also toconstruct my turn-table so as to be perfectly rigid. An additionaladvantage which I obtain by removing the wheels and employing the lowerportion of the pedestal as a brace to prevent the turn-table fromtipping consists in the fact that the turn-table is more easily turned,the resistant friction of the rollers It at the pedestalthat is, nearthe center of the circle described-being much less than the resistantfriction of rollers operating at the ends of the turn-table.

As the principal feature of my invention consists in a non-deflectableturn-table turning upon and supported (while turning) upon acentralsupport, combined with a non-frictional brace resting againstthelowerportion of thepedestal and preventing the turn-table from tipping, it isevident, therefore, that any suitable form of mechanism at the upper endof the pedestal for enabling the turn-table to be readily rotatedthereon may be employed in connection with such a construction oftheturn-table that the lower portion of thepedestal is made to serve IOOIIO

as a brace to prevent the turn-table from tipping.

By way of illustration,in cases where it is desirable to elevate thepoint upon which the table oscillates, and thereby lower the center ofgravity and enable the table to be kept more readily in balance when thelocomotive is upon it, the modification shown by dotted lines 'in Y Fig.3 may take the place of the flat plate M.

In other words, for the flat plate M may be substituted the concavehemispherical plate F, provided with an annular ange, through which pass'the bolts x, secured by nuts as aforesaid. This hemispherical plate Fincloses and rests upon a hemispherical piece, 1S,which rests upon thering t', and has a projection, o', which enters the central circularopening in the ring and prevents lateral displacement of the said piece18.

Any suitable devices for locking the turntable opposite any desiredtrack may be elnployed in connection with the aforementioned feature ofmy invention; also any suitable device for supporting the edge of theturn-table while the load is passing on or off the said table.

I have invented new and useful devices for simultaneously locking theturn-table, and also for supporting the latter during the reception ordelivery of its load. These devices are of the following-describedconstruction, to wit:

At either end of the turn-table are placed a couple of vertical lockingarms or stirrups, T, at bottom hinged or journaled on the bearing T',which latter is attached to the turn-table, as shown. These frontportions of the upper end of each of these locking arms or stirrups Tare provided with a semicircular projection, U, which, when the arm isadvanced to the side of the pit, enters a recess, V', provided for samebetween the rails of the track opposite which the turn-table is to belocked, each projection U resting upon the bottom of its respectiverecess and supporting the end of the turn-table.

The preferable means to be employed to ad vance the arm T to the recessV', and to retract it therefrom, is a yoke, 21, which at one endreceives a journal-pin, 2, extending from the side of the upper portionof arm T, and at the other end receives in a circular recess aneccentric, 3, fixed upon a shaft, 4, journaled in bearings 5, fixed tothe tie 6. To each eXtremity of the shaft et is xed a 1ever,7,which,whenthe arm T is retracted, lies down dat upon the ties, as shown in Fig. 6.The circular recess of the yoke 2l closely fits the eccentric 3, and aguard-plate, 9, attached to the inner side of the eccentric, preventsthe eccentric from slipping out of the recess through the openingwhereby it entered therein.

The locking device consists of two tongues or locking studs, l0, one ofwhich is connected to the outer side of the upper portion of eachlocking-arm T and just inside of the adjacent rail on the turntable, sothat when the latter arm is advanced the locking-stud 10 will also bemoved forward andthe front portion of the stud pass inside of the end ofthat rail located on the edge of the pit, and opposite that rail on` theturn-table which is adjacent to the said stud. Inasmucli as there aretwo lockingstuds, and they lie between and against the rails of theturn-table and the rails opposite to the track on the turn-table, it isevident that they will prevent the turn-table from rotating and keep therespective rails of the track on the turn-table and of the oppositetrack on the edge of the pit in line.

The method of operating theforegoing supporting and locking device is asfollows: The load is run onto the table, and the levers 7 are then movedover and toward the center of the turn-table and laid down ilat on theties, as shown in Fig. 6. By this movement the eccentric 3 is rotatedand the arms T and locking-studs are retracted to the table, as shown inFig. 6. The turn-table is now Wholly nnsupported everywhere except atthe pedestal, and is turned with great ease till the track thereon isopposite that track on the edge of the pit on which it is desired todeliver the load. The levers 7 are then lifted and moved over toward theedge of the pit, thereby simultaneously advancing the locking-arms T andthe locking-studs l0, and causing the projections U of the arms T toenter their respective notches V in the edge of the pit, and the studsl0 to pass inside of and against the rails, thereby locking theturn-table, keeping the track thereof in line with the track on the edgeof the pit, and also firmly supporting the edge of the turn-table. Theload is now run off the turn-table.

The above operation of unlocking and locking, &c., the turn-table isrepeated whenever the turntable is to be'shifted.

ICO

IOS

The recesses V may be placed outside the i rails, the arms or theirprojections being altered so that the projections U shall readily entersaid recesses.

The device for supporting' the ends of theV turn-table may be usedwithout the particular description of locking device herein shown, and,in fact, may be used with any other desirable description of lockingdevice.

The locking device may also be employed without the device forsupporting the ends of the turn-table, and may beadvantageouslyemployedwhere the ends of the turn-table are supported on wheels located nearsaid ends and rolling on a suitable track.

The locking devices or the said devices for supporting the ends of theturn-table, or both of said devices, maybe permanently located on theside of the pit, and where such is the situation of the said supportingdevice the recesses V will be made inthe ends of the turn-table andoccupy a position in relation to the rails of the table similar to thatwhich they (said recesses) occupy in relation to the rails of the pit.

What I claim as new and of my invention, and desire to secure by LettersPatent, is;-

IIO

1. The combination of a turn-table, provided with mechanism for enablingit to rotate on a central pedestal, and provided with brace 20, havinggroove P', rollers R, and said pedestal provided With surface j,substantially as and for the purposes specified.

2. The combination of a turn-table provided with mechanism for enablingit to rotate on a central pedestal, and provided with brace 20, havinggroove P and rollers It, and locking devices, and devices for supportingthe turntable While the load is passing oft' or on, substantially as andfor the purposes specified.

3. The combination ofa non-deflectable turntable, provided with box H,and plate M, andV ring t', rollers t, pedestal J, and ring S, androllers R, substantially as and for the purposes specitied.

4. The combination ofa non-dciectable turntable andbox H, and plate M,and ring t', rollers t, pedestal J, and ring S, and rollers R, anddevices for locking the turntable and for snpporting the turn-tablewhile the load is passing on or ott' the turn-table, substantially asand for the purposes specied.

5. The device for supporting the turntable While the load is passing onor od the latter, and consisting of the oscillating arms T, providedWith projections U, mechanism for advancing and retracting said arms,and a pit provided with recesses V', substantially as and for thepurposes specied.

6. The device for supporting the ends of the turn-table, consisting ofthe oscillating arms T, provided With projections U, pivoted at Tl tothe -trusses B, eccentric yokes 2l, eccentrics 3, shaft 4, and levers 7,substantially as and for the purposes specified.

7. The device forlocking the turn-table, consisting of the oscillatingarms T and lockingstuds l0, substantially as and for the purposesspecified.

8. ln combination, the oscillating arms having projections U andlocking-studs 10, mechanism for advancing and retraetin g said arms,andthe pit provided with recesses V', substantially as and for thepurposes speciied.

9. In combination, the oscillating arms pivoted at T to the turn-table,and having projections U and locking-studs 10, and the eccentric yokes2l, eccentrics 3, shaft 4, and levers 7, substantially as and for thepurposes specified.

l0. In combination, a turn-table turning on a central pedestal, brace20, anti-friction rollers R, and locking device consisting of theoscillating arms having projections U, and mechanism for advancing andretracting said arms, substantially as and for the purposes specified.

l1. ln combination, a turn-table turning on a central pedestal, brace20, anti-friction rollers R, and device for supporting the ends of theturn-table when locked, and consisting of the oscillating arms havingprojections U, and mechanism for advancing and retracting said arms,substantially as and for the purposes specified.

l2. In combination, a turn-table turning on a central pedestal,brace-20, anti-friction roll! ers R, oscillating arms T, provided withprojections U, locking-studs l0, and mechanism for advancing andretracting said arms, substantially as and for the purposes specified.

(ELEMENTS A. GREENLEAF.

Witnesses:

FRANCES C. GREENLEAF, L. GHRIsrrAN.

